Magnetic pulse welding of Al to Mg alloys: Structural-mechanical properties of the interfacial layer

A. Stern, M. Aizenshtein

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The magnetic pulse welding of Al-A1050 to Mg alloys was successfully performed, and the structural-mechanical properties of the interfacial bonding layer produced between dissimilar metals were studied. The morphology of the interface layer has a typical wavy pattern with an average thickness of 20 μm. Compositional microanalysis showed that the composition of the interfacial layer is Al-50 at-%Mg and is practically uniform, being a direct outcome of the local melting effect, intensive mixing of the melt and a rapid rate of solidification. The composition of the bonding layer corresponds to the Al supersaturated intermetallic β phase (Mg17Al12). The elastic modulus (and the hardness) of the interfacial layer was measured using the nanoindentation technique, and its value of 60±1.4 GPa is in good agreement with the value calculated from first principles in the literature (57.3 GPa) for the Mg17Al12 intermetallic phase.

Original languageEnglish
Pages (from-to)1809-1813
Number of pages5
JournalMaterials Science and Technology
Volume27
Issue number12
DOIs
StatePublished - 5 Dec 2011
Externally publishedYes

Keywords

  • Al and Mg alloys
  • Elastic modulus
  • Interfaces
  • MPW
  • Nanoindentation

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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